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4 years ago

If a=5 and b=7, c= ?

Mathematics

2 answers:

Licemer1 [7]4 years ago

6 0

Then C Should Equal 9

Gala2k [10]4 years ago

6 0

I hope this helps you

c^2=5^2+7^2

c^2=25+49

c^2=74

c= square root of 74

or

c^2+5^2=7^2

c^2+25=49

c^2=24

c=2 square root of 6

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Measurement of <1 please help

GrogVix [38]

Answer:

27°

Step-by-step explanation:

Triangles when all three sides are added up make up 180°. So In this problem you would need to add up 80 and 73 (153) then subtracting that number by 180 (27) to find the value/measurement of <1.

4 0

3 years ago

How many different three-digit numbers can be written using digits from the set 5, 6, 7, 8, 9 without any repeating digits?

suter [353]

Answer: 60 different numbers can be formed

Step-by-step explanation:

Note that we have 5 different digits, and we must select 3 of them. They should not be repeated

The order of selection is important in this case, because the number 532 is not the same as the number 235.

So we have a permutations problem, where we have a set of n elements and we want to choose r from them.

Then we define the permutacion as:

$nPr=\frac{n!}{(n-r)!}$

In this case note that n=5 because there are 5 elements in the set.

r = 3 because we combine the elements to form three-digit numbers

Then:

$5P2=\frac{5!}{(5-3)!}$

$5P2=\frac{5!}{2!}$

$5P2=\frac{5*4*3*2!}{2!}$

$5P2=5*4*3$

$5P2=60$

4 0

3 years ago

11. A manufacturer inspects a sample of 400 personal video players and finds that 399 of them have no defects. The manufacturer

Leviafan [203]

Lets look at the info we have:-

400 personal video players and find that 399 have NO defects.

Solve:-

2000 ÷ 400 = 5

So, about 5 of the video players will be defect.

Hope I helped ya!! xD<span />

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3 years ago

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